Erratic: a post-glacial map drawing game about rocks with attitude

Millennia ago, the Great Progenitor came out of the farthest north in the form of a sheet of ice. You were a rock, living happily in your place of origin, until the Great Progenitor called you forth for a new and essential duty. Southward the ice ran, bringing you to new lands, until finally the heat of the sun broke the Great Progenitor’s advance. The ice melted, and you were left behind on a land scraped clean and ready for a new beginning. The [four/three/two] of you are the Sentinels, charged with looking over this place as it grows and changes. Though you cannot move, your consciousness stretches out over the land, and any who choose to listen -- animate or inanimate -- can hear your wisdom.